#!/usr/bin/perl

sub cat_ { local *F; open F, $_[0] or $_[1] ? die "cat of file $_[0] failed: $!\n" : return; my @l = <F>; wantarray ? @l : join '', @l }

sub read_already_loaded() {
    foreach (cat_("/proc/modules")) {
	my ($name) = split;
	$conf{$name}{loaded} = 1;
    }
}

sub load_deps($) {
    my ($file) = @_;

    local *F;
    open F, $file or log::l("error opening $file: $!"), return 0;
    foreach (<F>) {
	my ($f, $deps) = split ':';
	push @{$deps{$f}}, split ' ', $deps;
    }
}

my $module_extension = cat_('/proc/version') =~ /^Linux version 2.4/ ? '.o' : '.ko';

my %mappings = ("usb-ohci" => "ohci-hcd",
                "usb-uhci" => "uhci-hcd",
                "uhci" => "uhci-hcd",
                "printer" => "usblp",
                "bcm4400" => "b44",
                "3c559" => "3c359",
                "3c90x" => "3c59x",
                "dc395x_trm" => "dc395x",
                "audigy" => "snd-emu10k1");
                                  
sub load {
    my ($name, @options) = @_;
    $name =~ s/\.k?o$//;

    $name = $mappings{$name} || $name;  #- 2.4 -> 2.6 compat mappings

    $conf{$name}{loaded} and return;
    eval { load($_, 'prereq') } foreach @{$deps{$name}};

    system("packdrake -x /modules/modules.cz* /tmp $name$module_extension");
    -r "/tmp/$name$module_extension" or die "can't find module $name\n";
    system("/sbin/insmod /tmp/$name$module_extension");
    my $retval = $?;
    system("rm /tmp/$name$module_extension");
    $retval and die("insmod $name failed");
}

!@ARGV || $ARGV[0] =~ /-h/ and die "usage: modprobe <module> [<options...>]\n";

read_already_loaded();
load_deps("/modules/modules.dep");
load(@ARGV);